<template>
  <div class="container">
    <!-- 头部 -->
    <mt-header fixed title="吕朋贝-vue项目">
      <mt-button icon="back" slot="left" v-show="flag" @click="back"></mt-button>
    </mt-header>

    <!-- router-view -->
    <transition>
      <router-view></router-view>
    </transition>

    <!-- 底部 -->
    <nav class="mui-bar mui-bar-tab">
      <router-link class="mui-tab-item1" to="/home">
        <span class="mui-icon mui-icon-home"></span>
        <span class="mui-tab-label">首页</span>
      </router-link>
      <router-link class="mui-tab-item1" to="/member">
        <span class="mui-icon mui-icon-contact"></span>
        <span class="mui-tab-label">会员</span>
      </router-link>
      <router-link class="mui-tab-item1" to="/car">
        <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
          <span class="mui-badge" id="num">{{ $store.getters.allCount }}</span>
        </span>
        <span class="mui-tab-label">购物车</span>
      </router-link>
      <router-link class="mui-tab-item1" to="/search">
        <span class="mui-icon mui-icon-search"></span>
        <span class="mui-tab-label">搜索</span>
      </router-link>
    </nav>
  </div>
</template>
<script>
export default {
  data(){
    return {
      flag:false
    }
  },
  methods:{
    back(){
      this.$router.back();
    }
  },
  watch:{
    '$route.path':function(newVal,oldVal){
      if(newVal!=='/home'){
        this.flag = true;
      } else {
        this.flag = false;
      }
    }
  }
};
</script>
<style lang="scss" scoped>
.container {
  padding-top: 40px;
  padding-bottom:50px;
  overflow-x: hidden;
}
.mint-header {
  z-index: 999;
}
// 给组件切换添加动画,
.v-enter {
  opacity: 0;
  transform: translateX(100%);
}
.v-leave-to {
  opacity: 0;
  transform: translateX(-100%);
   // 添加absolute,不会从下到上进入
  position: absolute;
}
.v-enter-active,
.v-leave-active {
  transition: all 0.3s;
 
}
.mui-bar-tab .mui-tab-item1.mui-active {
      color: #007aff;
    }

    .mui-bar-tab .mui-tab-item1 {
      display: table-cell;
      overflow: hidden;
      width: 1%;
      height: 50px;
      text-align: center;
      vertical-align: middle;
      white-space: nowrap;
      text-overflow: ellipsis;
      color: #929292;
    }

    .mui-bar-tab .mui-tab-item1 .mui-icon {
      top: 3px;
      width: 24px;
      height: 24px;
      padding-top: 0;
      padding-bottom: 0;
    }

    .mui-bar-tab .mui-tab-item1 .mui-icon~.mui-tab-label {
      font-size: 11px;
      display: block;
      overflow: hidden;
      text-overflow: ellipsis;
    }
</style>


